502561621363 has 2 divisors, whose sum is σ = 502561621364. Its totient is φ = 502561621362.

The previous prime is 502561621339. The next prime is 502561621391. The reversal of 502561621363 is 363126165205.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 502561621363 - 2⁹ = 502561620851 is a prime.

It is not a weakly prime, because it can be changed into another prime (502561621313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251280810681 + 251280810682.

It is an arithmetic number, because the mean of its divisors is an integer number (251280810682).

Almost surely, 2^502561621363 is an apocalyptic number.

502561621363 is a deficient number, since it is larger than the sum of its proper divisors (1).

502561621363 is an equidigital number, since it uses as much as digits as its factorization.

502561621363 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 194400, while the sum is 40.

Adding to 502561621363 its reverse (363126165205), we get a palindrome (865687786568).

The spelling of 502561621363 in words is "five hundred two billion, five hundred sixty-one million, six hundred twenty-one thousand, three hundred sixty-three".